CFD simulation of hovercraft branch intake system under high-speed hovering navigation conditions

The engine equipped by hovercraft is divided into propulsion gas turbine and hovering gas turbine. Due to its large variety and quantity of propulsion devices, the air intake system of its power plant has the characteristics of multi-branches and complex structure. The flow field and pressure loss of multi-branch air intake system of hovercraft are numerically simulated in this paper. Under the same flow pressure, the inlet flow rate of the hovering gas turbine is the largest, followed by the flow rate of the gas turbine on both sides, and the flow rate of the gas turbine in the middle is the smallest. During high-speed hovering navigation, all gas turbines are in a high power state, and the overall flow rate of the intake system is high.